Anderson SB50 Connectors for Reliable Power Transfer

The Anderson SB50 is a 50-amp hot-plug rated DC power connector from our SB series, offered in 29 catalog part numbers for OEM and aftermarket replacement applications across industrial equipment. Each connector measures 81.3 × 35.1 mm and accepts 16–6 AWG (1.5–13.3 mm²) wire, with a UL-rated current of 120 A when terminated with 6 AWG cable. This compact format is engineered for dependable hot disconnect in industrial battery packs, floor scrubbers, and DC power distribution systems where uptime and safety are critical.

The Evolution of Anderson SB50 in High-Current Interconnect Systems

The Anderson SB50 began as a single-pole disconnect for battery-powered vehicles, but its architecture proved far more scalable than a fixed-purpose plug. We sized the housing at 81.3 × 35.1 mm to accept conductors from 16 AWG to 6 AWG (1.5–13.3 mm²), and the UL rating of 120A at 6 AWG gave engineers headroom for steady-state loads and short-duration peaks. The 50A hot-plug rating was a deliberate design choice: it lets operators make or break the circuit under moderate load without damaging contacts, a behavior that charging stations and battery management systems rely on daily. For high-cycle applications, we also offer an Anderson SB50 silver contact variant across five catalog numbers for 6–12 AWG wire, lowering contact resistance and keeping temperature rise stable across repeated insertions.

Because the SB50 performed so well in the field, we carried its design language into a wider interconnect ecosystem. The same keyed, color-coded, genderless geometry now spans everything from control wiring to main power feeds, so a single bill of materials can cover an entire machine:

Powerpole Pak — 85 catalog numbers, 20–10 AWG (0.75–6 mm²), for control and signal circuits
PP75 Powerpole — 78 catalog numbers, 81.3 × 47.9 mm housing, UL 120A at 6 AWG
PP180 Powerpole — 31 catalog numbers, UL 350A at 3/0 AWG
SB175 — 26 catalog numbers, UL 280A at 1/0 AWG, 100A hot-plug
SB350 — 25 catalog numbers, 1/0–350 mcm (53.5–185 mm²), UL 500A at 350 mcm, 100A hot-plug
SBE 320 / SBX 350 — 46 catalog numbers, 200.0 × 83.4 mm housing, UL 550A (350 mcm) / EN1175-1 320A

That is why system integrators continue to position the Anderson SB50 at the heart of high-current interconnect layouts instead of migrating to proprietary formats. With 29 SB50 catalog numbers plus the family shown below, we can match contact plating, housing color, and cable entry to your exact configuration. Send us your load profile and wire gauge requirements, and we will confirm the right variant from our verified catalog data.

Model	Rated current	Wire gauge	Typical application
Anderson SB50	UL 120A (6 AWG); 50A hot-plug	16–6 AWG (1.5–13.3 mm²)	Battery chargers, DC power distribution
Anderson PP75 Powerpole	UL 120A (6 AWG)	—	Panel-mounted power feeds
Anderson PP180 Powerpole	UL 350A (3/0 AWG)	—	High-current inverters, UPS systems
Anderson SB175	UL 280A (1/0 AWG); 100A hot-plug	—	Mobile equipment, traction systems
Anderson SB350	UL 500A (350 mcm); 100A hot-plug	1/0–350 mcm (53.5–185 mm²)	Energy storage, large-format batteries
Anderson SBE 320 / SBX 350	UL 550A (350 mcm) / EN1175-1 320A	—	Heavy industrial vehicles

Core Technology and Performance of the Anderson SB50 Connector

We engineer the anderson sb50 to deliver a specific performance contract: full-rated current in a housing that fits tight battery compartments and control cabinets. The connector measures 81.3 × 35.1 mm and accepts 16–6 AWG (1.5–13.3 mm²) conductors, covering the wire sizes most often used in DC power distribution. We offer 29 catalog numbers on this platform, so design teams can select keying and color combinations without altering their panel cutouts or wiring layout. With 6 AWG wire, the SB50 carries a UL rating of 120 A, and its 50 A hot-plug current allows live connection and disconnection in battery-swap and maintenance routines.

Our performance claims rest on measurable design choices:

UL-rated continuous current of 120 A at 6 AWG conductor size
Hot-plug current of 50 A for make-and-break under load
Wire acceptance from 16 to 6 AWG (1.5–13.3 mm²)
Compact envelope of 81.3 × 35.1 mm for dense panel layouts
Silver contact option available in five part numbers for 6–12 AWG conductors

The SB50 anchors our connector family; the table below compares it with the other Anderson models in our catalog.

Model	Rated current	Wire gauge	Typical application
Anderson SB50	UL 120 A (6 AWG)	16–6 AWG (1.5–13.3 mm²)	DC power distribution
Anderson PP75 Powerpole	UL 120 A (6 AWG)	—	Low-voltage DC interconnects
Anderson Powerpole Pak	—	20–10 AWG (0.75–6 mm²)	Signal and auxiliary power
Anderson SB175	UL 280 A (1/0 AWG)	—	High-current battery systems
Anderson PP180	UL 350 A (3/0 AWG)	—	Heavy-duty DC power
Anderson SB350	UL 500 A (350 mcm)	1/0–350 mcm (53.5–185 mm²)	Large-format energy storage
Anderson SBE 320 / SBX 350	UL 550 A (350 mcm) / EN1175-1 320 A	—	Industrial traction and charging

Across this family, the SB50 offers a strong balance of compact size, wire range, and hot-plug capability for 50 A class systems. If your load profile exceeds what the anderson sb50 can deliver, send us your current, duty cycle, and ambient temperature data, and we will select the correct SB-family housing for your application.

Anderson SB50 vs. Alternative Power Connector Solutions

When we map the Anderson SB50 against the rest of our SB and Powerpole families, the first thing buyers notice is that it is a deliberately sized mid-range platform rather than a universal substitute. The connector ships in 29 catalog part numbers, measures 81.3 × 35.1 mm, accepts 16–6 AWG (1.5–13.3 mm²) conductors, and carries a UL rating of 120 A at 6 AWG with a 50 A hot-plug capability. That combination of compact footprint and hot-plug safety is exactly what separates it from both the smaller Powerpole modules and the heavier SB175 and SB350 housings.

Model	Rated current	Wire gauge	Typical application
Anderson SB50	UL 120 A (6 AWG); 50 A hot-plug	16–6 AWG (1.5–13.3 mm²)	DC auxiliary circuits, battery disconnects
Anderson SB175	UL 280 A (1/0 AWG); 100 A hot-plug	—	Industrial power distribution, welding
Anderson SB350	UL 500 A (350 mcm); 100 A hot-plug	1/0–350 mcm (53.5–185 mm²)	Energy storage, high-amperage distribution
Anderson PP75 Powerpole	UL 120 A (6 AWG)	—	Modular panel distribution
Anderson PP180 Powerpole	UL 350 A (3/0 AWG)	—	High-density battery banks
Anderson SBE 320 / SBX 350	UL 550 A (350 mcm); EN1175-1 320 A	—	Industrial trucks, EV charging

The comparison explains why engineers treat the Anderson SB50 as the pivot point rather than the ceiling. For circuits that stay at or below 120 A continuous with a 6 AWG conductor, it matches the UL current rating of our PP75 Powerpole (81.3 × 47.9 mm, 78 part numbers) while adding a 50 A hot-plug capability that the bare Powerpole modules do not provide. When loads climb beyond 120 A, we direct customers to the SB175 (UL 280 A at 1/0 AWG, 100 A hot-plug) or the SB350 (UL 500 A at 350 mcm, 100 A hot-plug). At the top of the catalog, the SBE 320 / SBX 350 family (200.0 × 83.4 mm, 46 part numbers) carries UL 550 A at 350 mcm plus the EN1175-1 320 A rating required by many material-handling OEMs. If your load profile falls between these ratings, send us your duty-cycle data and we will recommend the correct housing.

Selection between these families reduces to three operating questions:

Hot-plug duty:

if operators connect or disconnect under load, the Anderson SB50 (50 A hot-plug) and the SB175 and SB350 (100 A hot-plug) are the only options in this lineup with a hot-plug rating.
Conductor size: the SB50 accepts 16–6 AWG (1.5–13.3 mm²), and for silver-contact applications we offer a 6–12 AWG variant across 5 part numbers when contact resistance is critical.

Footprint:

at 81.3 × 35.1 mm, the Anderson SB50 occupies far less panel space than the SB350 (182.6 × 107.9 mm), so dense multi-pole trays tend to favor SB50 banks while single high-current feeds justify the larger housings.

Anderson SB50 Specifications and Model Cross-Reference

Across the Anderson DC power connector line, the Anderson SB50 covers the 16–6 AWG band with a UL rating of 120A at 6 AWG and a hot-plug rating of 50A, while the SB175 and SB350 extend the same hot-plug architecture to 280A and 500A for progressively heavier conductors.

Model	Rated current	Wire gauge	Typical application
Anderson SB50 Connectors	UL 120A at 6 AWG; hot-plug 50A	16–6 AWG (1.5–13.3 mm²)	DC power circuits requiring up to 50A hot-plug
Anderson SB175 Connectors	UL 280A at 1/0 AWG; hot-plug 100A	1/0 AWG (per UL rating)	DC power circuits requiring up to 100A hot-plug
Anderson SB350 Connectors	UL 500A at 350 mcm; hot-plug 100A	1/0–350 mcm (53.5–185 mm²)	Heavy DC power circuits requiring up to 100A hot-plug on large conductors

The 29-SKU Anderson SB50 family measures 81.3 × 35.1 mm and also includes a dedicated silver-contact version (5 SKUs) for 6–12 AWG conductors, giving buyers a proven silver-contact option within the same SB50 footprint.

Application Scenarios for Anderson SB50 Connectors

Our Anderson SB50 quick-connect system is engineered for equipment that must be disconnected and reconnected repeatedly in demanding industrial environments. We currently list 29 part numbers across the SB50 family, every one measuring 81.3 × 35.1 mm and accepting 16–6 AWG (1.5–13.3 mm²) copper cable. The 50A hot-plug rating makes the Anderson SB50 a natural fit for battery change-out circuits on industrial forklifts, floor scrubbers, and aerial work platforms, where operators break the circuit under load several times per shift. For continuous-duty wiring, the same housing carries a UL rating of 120A when terminated with 6 AWG wire, so a single connector size covers both power and control circuits.

We also specify the Anderson SB50 in stationary DC distribution, UPS battery cabinets, and portable generator sets. When the application demands stable performance over many mating cycles, we supply the silver-contact version (PP75/SB50 Silver Contacts, 6–12 AWG, 5 part numbers) for high-cycle charging systems, battery test equipment, and diagnostic harnesses. These connectors act as the primary interface between battery packs and vehicle electrical systems in our customers' OEM designs. Common deployment scenarios we support with this connector family include:

Forklift battery connectors and fleet charging interfaces
Floor maintenance machines, sweepers, and scrubbers
DC distribution panels and UPS battery disconnect switches
Electric utility vehicles, golf carts, and personnel carriers
Portable power distribution for events, film sets, and backup power

To help you choose the right housing, here is how the SB50 compares with our other high-current connectors from the same catalog family. Review these ratings against your duty cycle, or send us your load profile and we will recommend the correct SB50 contact plating and housing option for your application.

Model	Rated current	Wire gauge	Typical application
Anderson SB50 Connectors	UL 120A (6 AWG); hot-plug 50A	16–6 AWG (1.5–13.3 mm²)	Battery change-out, DC distribution
Anderson SB175 Connectors	UL 280A (1/0 AWG); hot-plug 100A	—	Industrial trucks, large-format battery systems
Anderson SB350 Connectors	UL 500A (350 mcm); hot-plug 100A	1/0–350 mcm (53.5–185 mm²)	Motive power, high-capacity energy storage
Anderson PP180 Powerpole	UL 350A (3/0 AWG)	—	Modular high-current power distribution

Future Outlook: Why Anderson SB50 Remains the Industry Benchmark

When we evaluate the anderson sb50 against every connector we have launched since, the conclusion we keep returning to is simple: the SB50 remains the benchmark because it was designed around the constraints that still define industrial power today — limited panel space, mixed wire sizes, and the need to break a live circuit without shutting down a line. Our SB50 catalog currently lists 29 part numbers, each built to the same 81.3 × 35.1 mm housing, accepting 16–6 AWG (1.5–13.3 mm²) conductors. At 6 AWG we rate the contacts for UL 120 A, while the housing's hot-plug capability is rated at 50 A. For corrosive or high-cycle environments, we also offer a silver-contact variant in the PP75 / SB50 Silver Contacts range, available in 5 part numbers and covering 6–12 AWG while keeping the identical mating face. The same design logic scales upward, which is why specifying SB50 today does not limit your next upgrade. We build the entire SB family around consistent contact geometry and tooling, so a system that starts with SB50 can step up in current without rearchitecting the panel. Our current catalog includes:

SB175:

26 part numbers, 133.4 × 79.6 mm, UL 280 A at 1/0 AWG, hot-plug 100 A.
SB350: 25 part numbers, 182.6 × 107.9 mm, 1/0–350 mcm (53.5–185 mm²), UL 500 A at 350 mcm, hot-plug 100 A.

SBE 320 / SBX 350:

46 part numbers, 200.0 × 83.4 mm, UL 550 A at 350 mcm and EN1175-1 320 A.

Model	Rated current	Wire gauge	Typical application
SB50	UL 120 A (6 AWG); hot-plug 50 A	16–6 AWG (1.5–13.3 mm²)	Hot-plug industrial equipment, 50 A class
SB175	UL 280 A (1/0 AWG); hot-plug 100 A	1/0 AWG (at UL rating)	High-current hot-plug power
SB350	UL 500 A (350 mcm); hot-plug 100 A	1/0–350 mcm (53.5–185 mm²)	Very high current distribution
SBE 320 / SBX 350	UL 550 A (350 mcm); EN1175-1 320 A	—	EN1175-1 industrial truck power

Beyond the SB family, our Powerpole platform reinforces the same philosophy. The Powerpole Pak range covers 85 part numbers across 20–10 AWG (0.75–6 mm²); the PP75 line offers 78 part numbers with UL 120 A at 6 AWG in an 81.3 × 47.9 mm housing; and PP180 reaches UL 350 A at 3/0 AWG across 31 part numbers. Across all of these lines we keep the same tooling logic and contact interchangeability, which is why our customers standardize new equipment generations on the anderson sb50 rather than migrating to proprietary formats. Looking ahead, we treat the SB50 as a platform for growth, not a legacy product. We continue to invest in contact materials, plating options, and application tooling for this footprint. The hot-plug 50 A rating, the 16–6 AWG wire window, and the 81.3 × 35.1 mm envelope define a performance sweet spot that smaller connectors cannot reach and larger connectors overshoot. As battery chemistries and load profiles evolve, the UL 120 A margin at 6 AWG gives you headroom to absorb higher inrush without upsizing the panel. Send us your load data and your duty cycle; we will help you select the contact set and wire gauge that keeps your next program on the SB50 platform.

FAQ

Q: What is an Anderson SB50 connector used for?

A: The Anderson SB50 is a 50A hot-swap rated DC power connector with a compact 81.3×35.1mm footprint, accepting 16–6 AWG wire. It is designed for battery, forklift, and power equipment applications that need quick, reliable disconnects.

Q: How do I choose between the Anderson SB50 and SB175 for my power application?

A: Choose SB50 for circuits up to UL 120A (6 AWG) with 50A hot-swap; choose SB175 for up to UL 280A (1/0 AWG). Compare below.<table><tr><th>Model</th><th>Rated current</th><th>Wire gauge</th><th>Typical application</th></tr><tr><td>SB50</td><td>UL 120A</td><td>16–6 AWG</td><td>Battery and DC power</td></tr><tr><td>SB175</td><td>UL 280A</td><td>1/0 AWG (rated)</td><td>High-current industrial</td></tr></table>

Q: What is the correct crimping procedure for SB50 silver contacts?

A: Use a ratcheting crimp tool with the correct die for your 6–12 AWG conductor. Strip the wire, insert it fully into the silver contact barrel, crimp firmly, then pull-test to verify a gas-tight connection.

Q: How often should I inspect and maintain Anderson SB50 connectors?

A: Inspect the silver contacts for pitting, corrosion, or discoloration after each duty cycle or heavy use. Wipe them clean with a dry cloth or contact cleaner, and replace worn contacts immediately to keep resistance low.

Q: Why does my Anderson SB50 connector overheat and how can I fix it?

A: Overheating usually signals loose or oxidized contacts. Verify the wire is within 16–6 AWG and properly crimped, re-tighten the housing, and replace damaged silver contacts to restore a reliable connection.

Q: What does the hot-swap capability mean for an Anderson SB50 connector?

A: The Anderson SB50 is designed for hot-swap applications up to 50A, meaning you can safely connect or disconnect under load. Its UL 120A rating at 6 AWG gives ample headroom for routine power switching in battery and DC systems.

Q: At what wire gauge does the Anderson SB50 deliver its full 120A UL rating?

A: The SB50 achieves its UL 120A rating with 6 AWG conductors. It accepts 16–6 AWG (1.5–13.3 mm²) wire, so choose 6 AWG when you need the maximum current capacity for your power application.

Q: Which Anderson SB50 silver contacts are available for crimping, and what wire sizes do they accept?

A: Our SB50 silver contacts accept 6–12 AWG conductors. For a secure crimp, select the contact matching your wire size, then use a crimp tool matched to the contact barrel per our procedure.

Q: Do Anderson SB50 connectors need more frequent checks when used for hot-swap operations?

A: Yes—hot-swap duty at 50A stresses contacts. Inspect the SB50's silver contacts for wear or pitting after repeated disconnects, especially in high-cycle battery systems. This helps prevent intermittent failures.

Q: Can an Anderson SB50 handle a 50A continuous load without overheating?

A: Yes, but note the 50A hot-swap rating applies to making/breaking under load. For continuous duty, the SB50 is UL rated at 120A with 6 AWG wire, so a 50A load is well within safe operating range.

Q: What are the physical dimensions and standard wire range of the Anderson SB50 connector?

A: The Anderson SB50 housing measures 81.3 × 35.1 mm and accepts 16–6 AWG (1.5–13.3 mm²) cable. We offer 29 catalog part numbers in this series. Its compact rectangular body is designed for high-current DC power distribution in battery and industrial equipment.

Q: What are the continuous and hot-swap current ratings for the Anderson SB50?

A: For Anderson SB50, our UL continuous rating is 120 A at 6 AWG, while the hot-swap current is limited to 50 A. When selecting for a static connection, size wire for 120 A; for live mating/unmating, follow the 50 A hot-swap spec to prevent contact damage.

Q: What tool and die do I need for crimping SB50 silver contacts?

A: To crimp our Anderson SB50 silver contacts, use an approved hand or hydraulic crimper with the die matching the contact barrel. These contacts accept 6–12 AWG wire. After crimping, perform a pull-test to confirm the connection holds at the specified force.

Q: What should I check during a routine visual inspection of SB50 connectors?

A: We recommend inspecting Anderson SB50 contacts for pitting, discoloration, or wear, and checking the housing for cracks or warping. Also verify the wire insulation is clean, contact retention is firm, and the locking clip functions properly. Frequency depends on your duty cycle.

Q: Why does my Anderson SB50 lose connection under vibration?

A: Vibration can loosen the SB50’s socket retention or fatigue the contact. Ensure the connector is fully seated with the retaining clip engaged, and add a secondary strain relief near the wire exit. If contacts show wear, replace them with new silver contacts rated for 6–12 AWG.